Vou. IL] PLUM FAMILY. 249 
7. Prunus maritima Wang. Beach Plum. (Fig. 2013.) 
Prunus maritima Wang. Am. 103. 178r. 
Prunus cerasifera Ehth. Beitr. 4:17. 1789. 
Prunus sphaerocarpa Michx. F1. Bor. Am. 1: 284. 1803. 
A low much-branched shrub, 1°-7° high, not 
thorny. Leaves oval, ovate or obovate, finely and 
sharply serrate, acutish or acute at the apex, rounded 
at the base, pubescent beneath even when old; flow- 
ers white, numerous, showy, in sessile lateral um- 
bels, expanding before the leaves, 5’/-8’’ broad; 
petals obovate; drupe globose, purple, 14/—1’ in di- 
ameter, sweet when ripe, covered with a bloom; 
stone little flattened, acute on one margin, slightly 
grooved on the other, usually pointed at both ends. 
On seabeaches and in sandy soil near the coast, Vir- 
ginia to New Brunswick. April-May. Fruit ripe in 
Sept. or Oct. 
8. Prunus Gravesii Small. Graves’ 
Beach Plum. (Fig. 2014.) 
Prunus Gravesti Small, Bull. Torr. Club, 24: 45. 
1897. 
A low shrub, reaching a maximum height of 
about 4°, not thorny, the twigs of the season 
mostly puberulent. Leaves orbicular, oval- 
orbicular, or slightly obovate, 9’/-18/’ long, 
rounded, retuse or apiculate at the apex, obtuse 
or truncate at the base, pubescent, at least on 
the nerves beneath; flowers white, about 6// 
broad, solitary or 2-3 together in lateral um- 
bels, expanding with the leaves; petals subor- 
bicular; drupe globose, 5//-8/’ in diameter, 
nearly black, with a light blue bloom; stone 
nearly as thick as wide, pointed only at the base. 
On a gravelly ridge, Groton, Connecticut. May- 
June. Fruit ripe in Sept. 
g. Prunus gracilis Engelm. & Gray. 
Low Plum. (Fig. 2015.) 
Prunus gracilis Engelm. & Gray, Bost. Journ. 
Nat. Hist. 5: 243. 1847. 
A branching shrub, 1°-4° high, the foliage 
and young twigs densely soft-pubescent. 
Leaves short-petioled, ovate-lanceolate or oval, 
acute or acutish at both ends, sharply serrate, 
glabrate on the upper surface at maturity; 
flowers white, 3/’-4’’ broad, in sessile, lateral 
umbels, appearing before the leaves; pedicels 
slender, pubescent; drupe oval-globose, 4//-5/’ 
in diameter; stone little flattened, nearly orbi- 
cular. 
In saidy or dry soil, Tennessee to Kansas and 
Texas. 
